Phonon Raman scattering of R2CuO4 (R = Pr, Nd, Sm, and Gd)

Masayuki Udagawa; Yoshinori Nagaoka; Norio Ogita; Miki Masada; Jun Akimitsu; Kohji Ohbayashi

doi:10.1007/BF00724587

Phonon Raman scattering of R₂CuO₄ (R = Pr, Nd, Sm, and Gd)

Masayuki Udagawa, Yoshinori Nagaoka, Norio Ogita, Miki Masada, Jun Akimitsu, Kohji Ohbayashi

研究成果 › 査読

抄録

For Gd₂CuO₄, a new symmetry-forbidden phonon for the tetragonal T′ structure is observed. This implies that oxygen in the CuO₂ plane is locally distorted along the CuO₂ plane. Such distortion has never been observed for other T′-type superconductors, which show superconductivity by Ce doping. The disappearance of superconductivity for Gd can be correlated with the appearance of the distortion due to oxygen in the CuO₂ plane.

本文言語	English
ページ（範囲）	449-451
ページ数	3
ジャーナル	Journal of Superconductivity
巻	7
号	2
DOI	https://doi.org/10.1007/BF00724587
出版ステータス	Published - 4月 1994
外部発表	はい

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
凝縮系物理学
物理学および天文学（その他）

文献へのアクセス

10.1007/BF00724587

他のファイルとリンク

引用スタイル

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title = "Phonon Raman scattering of R2CuO4 (R = Pr, Nd, Sm, and Gd)",

abstract = "For Gd2CuO4, a new symmetry-forbidden phonon for the tetragonal T′ structure is observed. This implies that oxygen in the CuO2 plane is locally distorted along the CuO2 plane. Such distortion has never been observed for other T′-type superconductors, which show superconductivity by Ce doping. The disappearance of superconductivity for Gd can be correlated with the appearance of the distortion due to oxygen in the CuO2 plane.",

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AU - Udagawa, Masayuki

AU - Nagaoka, Yoshinori

AU - Ogita, Norio

AU - Masada, Miki

AU - Akimitsu, Jun

AU - Ohbayashi, Kohji

PY - 1994/4

Y1 - 1994/4

N2 - For Gd2CuO4, a new symmetry-forbidden phonon for the tetragonal T′ structure is observed. This implies that oxygen in the CuO2 plane is locally distorted along the CuO2 plane. Such distortion has never been observed for other T′-type superconductors, which show superconductivity by Ce doping. The disappearance of superconductivity for Gd can be correlated with the appearance of the distortion due to oxygen in the CuO2 plane.

AB - For Gd2CuO4, a new symmetry-forbidden phonon for the tetragonal T′ structure is observed. This implies that oxygen in the CuO2 plane is locally distorted along the CuO2 plane. Such distortion has never been observed for other T′-type superconductors, which show superconductivity by Ce doping. The disappearance of superconductivity for Gd can be correlated with the appearance of the distortion due to oxygen in the CuO2 plane.

KW - Raman scattering

KW - T′ structure

KW - local distortion

KW - phonon

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